CN204226655U - The control valve that a kind of nothing leaks outside - Google Patents

The control valve that a kind of nothing leaks outside Download PDF

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Publication number
CN204226655U
CN204226655U CN201420498763.9U CN201420498763U CN204226655U CN 204226655 U CN204226655 U CN 204226655U CN 201420498763 U CN201420498763 U CN 201420498763U CN 204226655 U CN204226655 U CN 204226655U
Authority
CN
China
Prior art keywords
filler
valve
ptfe
board
nail pressing
Prior art date
Application number
CN201420498763.9U
Other languages
Chinese (zh)
Inventor
徐建根
金一丁
胡勇
Original Assignee
浙江智杰阀业有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 浙江智杰阀业有限公司 filed Critical 浙江智杰阀业有限公司
Priority to CN201420498763.9U priority Critical patent/CN204226655U/en
Application granted granted Critical
Publication of CN204226655U publication Critical patent/CN204226655U/en

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Abstract

The utility model discloses the control valve that a kind of nothing leaks outside, described valve seat and guide sleeve are fixedly mounted in valve body, and valve gap is connected with valve body fastening piece; Described valve core valve stem is through guide sleeve and valve gap, and the filler between the stuffing box of valve gap and valve rod is graphite packing and PTFE filler; Separate with filler spacer between described graphite packing and PTFE filler; Filler nail pressing, filler press table, belleville spring, filler top board is provided with successively above described PTFE filler, and filler nail pressing is inserted in inside and outside O shape circle, filler top board is connected with valve gap by fastening piece, and butterfly spring is between filler press table and filler top board.The utility model is by adopting triple seal, and pressing plate nail pressing have employed " mobile load " structure, and butterfly spring can compensate the pretightening force be pressed on filler, thus prevents from relaxing because of follower bolt or filler relaxes and causes leaks outside, and makes filler load remain constant.

Description

The control valve that a kind of nothing leaks outside

Technical field

The utility model relates to control valve field, is specially the control valve that a kind of nothing leaks outside.

Background technique

Control valve is the terminal control original paper of automatic control system, particularly in chemical plant installations, there is many high temperature and high pressure conditions, medium has stronger toxicity and corrosivity, and inflammable and explosive, when valve has leakage, not only can cause the waste of raw material and product, and also can cause severe contamination to environment, even cause the security incident of fire, blast, the life threatening such as poisoning.Therefore, the sealing problem of valve should cause enough attention, reasonably selects the sealing of control valve to be very important in design selection.The sealing of valve is divided into two kinds, i.e. outside seal and inner sealing, for the outside seal of control valve, i.e. packing seal, the filler of modulating valve is generally contained in the stuffing box of the bonnet of modulating valve, effect stops the leakage by adjusting processing medium to cause because of stem movement, and the valve stem seal of valve nearly all utilizes stuffing box to realize.Conventional filler can be divided into two large classes according to material: graphite and polytetrafluoroethylene (PTFE), derive a variety of filler, with the requirement of satisfied different operating mode by this two classes base material simultaneously.In the process that control valve uses at the scene, because the many reasons such as environment, operating mode and self structure cause the filler place of modulating valve to leak, it is the more common fault of modulating valve, also be influential system device quantity-produced key factor, the example causing device to stop because of modulating valve packing leaking is also rarely seen absolutely not, is a great problem of puzzlement valve industry.

Model utility content

The technical problem that the utility model solves is the control valve providing a kind of nothing to leak outside, to solve the problem.

The technical problem that the utility model solves realizes by the following technical solutions:

The control valve that a kind of nothing leaks outside, comprise valve body, valve seat, valve core valve stem, guide sleeve, valve gap, graphite packing, filler spacer, PTFE spacer, fastening piece, filler top board, belleville spring, filler press table, filler nail pressing, O shape circle, described valve seat and guide sleeve are fixedly mounted in valve body, and valve gap is connected with valve body fastening piece; Described valve core valve stem is through guide sleeve and valve gap, and the filler between the stuffing box of valve gap and valve core valve stem is graphite packing and PTFE filler; Separate with filler spacer between described graphite packing and PTFE filler; Filler nail pressing, filler press table, belleville spring, filler top board is provided with successively above described PTFE filler, and filler nail pressing is inserted in inside and outside O shape circle, filler top board is connected with valve gap by fastening piece, and butterfly spring is between filler press table and filler top board.

As preferably, described control valve adopts triple seal, and the additional belleville spring pretension in stuffing box top, adopts arc surface to contact between filler nail pressing and filler press table.

As preferably, in described stuffing box, graphite packing is positioned over bottom, and PTFE filler is placed on top, places the filler spacer of hollow between 2 kinds of fillers, and filler nail pressing places O shape circle.

The utility model is by adopting triple seal, most operating modes and the seal request of medium can be met, pressing plate nail pressing have employed " mobile load " structure, namely between filler nail pressing and pressing plate, butterfly spring is added, even if filler generation senile abrasion, valve internal pressure change greatly, butterfly spring can compensate the pretightening force be pressed on filler, thus prevents from relaxing because of follower bolt or filler relaxes and causes leaks outside, and makes filler load remain constant.

Accompanying drawing explanation

Fig. 1 is structural representation of the present utility model.

Fig. 2 is the structural representation of No leakage stuffing box.

Embodiment

In order to make actualizing technology means of the present utility model, creation characteristic, reach object and effect is easy to understand, below in conjunction with concrete diagram, set forth the utility model further.

As shown in Figure 1-2, the control valve that a kind of nothing leaks outside, comprise valve body 1, valve seat 2, valve core valve stem 3, guide sleeve 4, valve gap 5, graphite packing 6, filler spacer 7, PTFE spacer 8, fastening piece 9, filler top board 10, belleville spring 11, filler press table 12, filler nail pressing 13, O shape circle 14, described valve seat 2 and guide sleeve 4 are fixedly mounted in valve body 1, and valve gap 5 is connected with valve body 1 fastening piece; Described valve core valve stem 3 is through guide sleeve 4 and valve gap 5, and the filler between the stuffing box of valve gap 5 and valve core valve stem 3 is graphite packing 6 and PTFE filler 8; Separate with filler spacer 7 between described graphite packing 6 and PTFE filler 8; Described PTFE filler 8 is provided with filler nail pressing 13, filler press table 12, belleville spring 11, filler top board 10 above successively, and filler nail pressing 13 is inserted in inside and outside O shape circle 14, filler top board 10 is connected with valve gap 5 by fastening piece 9, and butterfly spring 11 is between filler press table 12 and filler top board 10.

As preferably, described control valve adopts triple seal, and stuffing box top additional belleville spring 11 pretension, adopts arc surface to contact between filler nail pressing 13 and filler press table 12.

As preferably, in described stuffing box, graphite packing 6 is positioned over bottom, and PTFE filler 8 is placed on top, places the filler spacer 7 of hollow between 2 kinds of fillers, and filler nail pressing 13 places O shape circle 14.

The utility model is by adopting triple seal, most operating modes and the seal request of medium can be met, pressing plate nail pressing have employed " mobile load " structure, namely between filler nail pressing and pressing plate, butterfly spring is added, even if filler generation senile abrasion, valve internal pressure change greatly, butterfly spring can compensate the pretightening force be pressed on filler, thus prevents from relaxing because of follower bolt or filler relaxes and causes leaks outside, and makes filler load remain constant.

More than show and describe basic principle of the present utility model and major character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; what describe in above-described embodiment and specification just illustrates principle of the present utility model; under the prerequisite not departing from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.Claimed scope of the present utility model is defined by appending claims and equivalent thereof.

Claims (3)

1. the control valve that leaks outside of a nothing, comprise valve body, valve seat, valve core valve stem, guide sleeve, valve gap, graphite packing, filler spacer, PTFE spacer, fastening piece, filler top board, belleville spring, filler press table, filler nail pressing, O shape circle, it is characterized in that: described valve seat and guide sleeve are fixedly mounted in valve body, valve gap is connected with valve body fastening piece; Described valve core valve stem is through guide sleeve and valve gap, and the filler between the stuffing box of valve gap and valve core valve stem is graphite packing and PTFE filler; Separate with filler spacer between described graphite packing and PTFE filler; Filler nail pressing, filler press table, belleville spring, filler top board is provided with successively above described PTFE filler, and filler nail pressing is inserted in inside and outside O shape circle, filler top board is connected with valve gap by fastening piece, and butterfly spring is between filler press table and filler top board.
2. the control valve that leaks outside of a kind of nothing according to claim 1, is characterized in that: described control valve adopts triple seal, and the additional belleville spring pretension in stuffing box top, adopts arc surface to contact between filler nail pressing and filler press table.
3. the control valve that leaks outside of a kind of nothing according to claim 1, is characterized in that: in described stuffing box, graphite packing is positioned over bottom, and PTFE filler is placed on top, places the filler spacer of hollow between 2 kinds of fillers, and filler nail pressing places O shape circle.
CN201420498763.9U 2014-09-01 2014-09-01 The control valve that a kind of nothing leaks outside CN204226655U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420498763.9U CN204226655U (en) 2014-09-01 2014-09-01 The control valve that a kind of nothing leaks outside

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420498763.9U CN204226655U (en) 2014-09-01 2014-09-01 The control valve that a kind of nothing leaks outside

Publications (1)

Publication Number Publication Date
CN204226655U true CN204226655U (en) 2015-03-25

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201420498763.9U CN204226655U (en) 2014-09-01 2014-09-01 The control valve that a kind of nothing leaks outside

Country Status (1)

Country Link
CN (1) CN204226655U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106523724A (en) * 2015-09-11 2017-03-22 骊住株式会社 Faucet

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106523724A (en) * 2015-09-11 2017-03-22 骊住株式会社 Faucet

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C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20150325

Termination date: 20170901